diff --git a/Assets/Cryville/Crtr/Config/IPropertyAdapter.cs b/Assets/Cryville/Crtr/Config/IPropertyAdapter.cs
index cc80eee..2bc9dd3 100644
--- a/Assets/Cryville/Crtr/Config/IPropertyAdapter.cs
+++ b/Assets/Cryville/Crtr/Config/IPropertyAdapter.cs
@@ -14,6 +14,7 @@ namespace Cryville.Crtr.Config {
 		object GetValue();
 		void SetValue(object value);
 		event Action ValueChanged;
+		void Invalidate();
 		object MapValue(object value);
 		bool SetMapped { get; }
 		object MapValueInverse(object value);
@@ -38,7 +39,10 @@ namespace Cryville.Crtr.Config {
 		public object GetValue() { return _prop.GetValue(_target, null); }
 		public void SetValue(object value) { _prop.SetValue(_target, value, null); }
 
-		public event Action ValueChanged { add { } remove { } }
+		public event Action ValueChanged;
+		public void Invalidate() {
+			ValueChanged?.Invoke();
+		}
 
 		readonly double _precision;
 		readonly double _step;
diff --git a/Assets/Cryville/Crtr/Config/RulesetConfigPropertyAdapter.cs b/Assets/Cryville/Crtr/Config/RulesetConfigPropertyAdapter.cs
index ab1c209..edfe107 100644
--- a/Assets/Cryville/Crtr/Config/RulesetConfigPropertyAdapter.cs
+++ b/Assets/Cryville/Crtr/Config/RulesetConfigPropertyAdapter.cs
@@ -30,7 +30,7 @@ namespace Cryville.Crtr.Config {
 		public void SetValue(string key, object value) {
 			_store[key] = value;
 			foreach (var prop in _props) {
-				prop.OnValueChanged();
+				prop.Invalidate();
 			}
 		}
 	}
@@ -79,9 +79,8 @@ namespace Cryville.Crtr.Config {
 		}
 
 		public event Action ValueChanged;
-		public void OnValueChanged() {
-			var ev = ValueChanged;
-			if (ev != null) ev();
+		public void Invalidate() {
+			ValueChanged?.Invoke();
 		}
 
 		public bool SetMapped { get { return false; } }